Process for controlling the molecular weight of...

Details Process for controlling the molecular weight of... Process for controlling the molecular weight of...

C - Chemistry, Metallurgy

08

F

402/11

C08F 38/00 (2006.01) C08F 2/38 (2006.01)

Patent

CA 1315462

ABSTRACT The present invention is a process for polymerizing trialkylsilylacetylene derived monomers to form the corresponding poly(trialkylsilylacetylene) polymer. The polymerization reaction is carried out in the presence of an organic solvent over a catalyst comprising a halide of a transition metal of group Vb or VIb. The molecular weight of the resultant polymer is decreased by adding to the reaction mixture, in a concentration between about 0.5-25 wt.%, a compound having the structural formula: Image wherein each R is independently methyl, C2-4 alkyl or phenyl, and n is from 1 to 100.

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